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. A submersible pump was decontaminated prior to purging each well by washing <br /> the pump in a Liquinox solution and triple rinsing with deionized water Each <br /> monitoring well was developed by pumping a minimum of three well volumes <br /> of casing water and until consecutive conductivity, pH, and temperature <br /> measurements varied by less than 10% Samples were collected with a clean <br /> disposable bailer Field notes which include depth to water measurements, <br /> temperature, conductivity and pH information are included with this letter <br /> Site Status <br /> Based on the lack of any significant impact of the diesel release on groundwater, <br /> no remediation activities are proposed for the site Previous sampling has <br /> shown that benzene and TPH-gasoline are not present in groundwater on this <br /> property Once-a-year sampling for TPH-diesel and measurement of <br /> groundwater elevation should be sufficient to monitor any change in <br /> groundwater status Because detections of diesel fuel have routinely been below <br /> 10 mg/1, Safeway believes that no further action is warranted at this site If you <br /> have any questions regarding this matter, please do not hesitate to call me <br /> Sincerely, <br /> ERM-WEST, INC <br /> WA <br /> i William A Spon <br /> Project Manager <br /> WAS/mss/1218 03 <br /> Attachments Noted <br /> cc Mehta Elmore, Safeway <br /> Mike Frost, Safeway <br /> Elizabeth Thayer, CVRWQCB <br /> • <br />